Aquatic treadmill



FIG. 1 is a top, rear and left side perspective view showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view thereof, the left side being a mirror image thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines showing portions of the aquatic treadmill are for illustrative purposes only and form no part of the claimed invention. 

I claim the ornamental design for an aquatic treadmill, as shown and described. 